CN112726816B - Prefabricated assembled sways from restoring to throne concrete frame structure - Google Patents
Prefabricated assembled sways from restoring to throne concrete frame structure Download PDFInfo
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- CN112726816B CN112726816B CN202011566691.3A CN202011566691A CN112726816B CN 112726816 B CN112726816 B CN 112726816B CN 202011566691 A CN202011566691 A CN 202011566691A CN 112726816 B CN112726816 B CN 112726816B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/025—Structures with concrete columns
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Abstract
The invention discloses a prefabricated assembly type swinging self-resetting concrete frame structure which comprises a concrete foundation, a concrete column, a concrete beam, a column base node structure and a beam end node structure, wherein the concrete column is vertically arranged in a limiting groove on the top surface of the concrete foundation through a steel shoe, and the concrete beam is horizontally arranged on the side wall of the concrete column; the column base node structure comprises a cantilever plate, an anchor rod and a column base belleville spring group; the cantilever plates are connected to two sides of the concrete column close to the bottom and connected with the steel boots; and a plurality of anchor rods penetrate through the cantilever plate and are fixedly connected with the concrete foundation, and the column foot belleville spring group is sleeved on the anchor rod on one side of the cantilever plate far away from the concrete foundation. The concrete column is arranged in the limiting groove through the steel shoe to limit lateral displacement; the concrete column and the concrete foundation are only in contact without connection, and the concrete column can slightly swing in the horizontal direction due to the fact that the column base belleville spring group is arranged at the top of the cantilever plate when a strong shock occurs, so that the formation of a column base node structure plastic hinge is avoided.
Description
Technical Field
The invention relates to the technical field of earthquake-resistant structural systems, in particular to a prefabricated assembly type swinging self-resetting concrete frame structure.
Background
The early earthquake-proof engineering research mainly focuses on reducing collapse of buildings and casualties under heavy earthquakes, namely 'heavy earthquakes do not fall', but multiple earthquake damages indicate that economic losses caused by loss of normal use functions of the buildings under the action of earthquakes are more and more prominent, namely, the equipment cost of interior decoration, non-structural parts, indoor important devices and the like of the buildings often exceeds the structural cost of the buildings.
In order to improve the earthquake resistance of building structures and guarantee the life and property safety of people, recoverable functional structures which can quickly recover the normal use function of the structures after strong earthquake become hot spots of earthquake-resistant engineering research in recent years.
The self-resetting structure can reduce the response of the structure in the earthquake and the residual deformation after the earthquake, and the hysteresis curve of the structure under the action of reciprocating load is similar to a flag shape, so that the vertex lateral displacement of the structure can be gradually restored to zero after the external force is cancelled; meanwhile, the swinging of the structure can reduce the earthquake action and improve the self ductility design requirement of the structure, reduce earthquake damage and save the construction cost.
In summary, those skilled in the art need to solve the above-mentioned problems how to provide a structure that can swing under the action of an earthquake and has little residual deformation after the earthquake.
Disclosure of Invention
In view of the above, the present invention provides a prefabricated assembly type swinging self-resetting concrete frame structure, which reduces the damage of the structure under strong earthquake, has small residual deformation after earthquake, and is beneficial to rapidly restoring the use function of the structure.
In order to achieve the above purpose, the invention provides the following technical scheme:
a prefabricated assembly type swinging self-resetting concrete frame structure comprises a concrete foundation, a concrete column, a concrete beam, a column base node structure and a beam end node structure, wherein the concrete column is vertically arranged in a limiting groove on the top surface of the concrete foundation through a steel shoe, and the concrete beam is horizontally arranged on the side wall of the concrete column;
the column base node structure comprises a cantilever plate, an anchor rod and a column base belleville spring group;
the cantilever plates are connected to two sides of the concrete column close to the bottom and connected with the steel boots;
the anchor rods penetrate through the cantilever plate and are fixedly connected with the concrete foundation, and the column foot belleville spring group is sleeved on the anchor rods on one side, far away from the concrete foundation, of the cantilever plate.
Preferably, the beam end node structure comprises stiffening ribs, an ultra-small bracket, a damper, a pull rod and a beam end belleville spring group;
the pull rods penetrate through the side wall of the concrete column, and the beam-end disc spring group is arranged at the end parts of the pull rods;
the stiffening ribs are arranged on two sides of a web plate of the concrete beam, and one ends of the stiffening ribs are connected with end plates, which are used for being attached to the side faces of the concrete columns, of the concrete beam;
the side surface of the ultra-small bracket is connected with the side wall of the concrete column, and the top surface of the ultra-small bracket is in contact with the lower flange of the concrete beam;
the damper is installed on the top surface and/or the bottom surface of the concrete beam and connected with the concrete column.
Preferably, a supporting plate is arranged between the cantilever plate and the concrete foundation, and the cantilever plate and the steel shoe are connected with the supporting plate.
Preferably, the bottom of the concrete column is provided with a bottom plate, the bottom plate is connected with the steel boot, and the steel bar in the concrete column penetrates through the bottom plate and is fixedly connected with the bottom plate.
Preferably, an embedded member is arranged in the concrete foundation, and the anchor rod is connected with the embedded member.
Preferably, a circular gasket is arranged at one end of the anchor rod, which is far away from the concrete foundation, and the column foot disc spring is assembled between the circular gasket and the cantilever plate.
Preferably, an end anchor plate is arranged at the beam end of the concrete beam, and a steel bar of the concrete beam penetrates through the end anchor plate and is fixedly connected with the end anchor plate;
and a gap is arranged between the end anchor plate and the beam end belleville spring group.
Preferably, the concrete column is provided with a reserved hole for the pull rod to pass through, and the pull rod sequentially passes through the end plate located on one side of the concrete column, the reserved hole and the end plate located on the other side of the concrete column to be connected with the concrete column.
Preferably, a circular gasket is arranged at one end, far away from the base plate, of the pull rod, and the beam-end disc spring is assembled between the circular gasket and the base plate.
Preferably, the damper comprises a C-shaped damper and energy consumption angle steel.
When the column base disc spring group and the beam end disc spring group are installed, certain pre-pressure is applied to the column base disc spring group and the beam end disc spring group, so that the column base disc spring group and the beam end disc spring group are in a stable state when vibration does not occur.
At the column base node, the steel shoe can perform annular restraint on the concrete column, so that the compressive strength of the concrete column is improved, and the concrete column is prevented from being damaged under the condition of axial compression; meanwhile, the concrete column is installed in a limiting groove of the concrete foundation through the steel shoe, the lateral displacement of the concrete column is limited, the concrete column and the concrete foundation are only in contact without connection relation, when a strong shock occurs, the concrete column can slightly shake in the vertical direction due to the fact that the column base belleville spring set is arranged at the top of the cantilever plate, and the formation of a column base node structure plastic hinge is effectively avoided.
Furthermore, the beam end node structure is arranged at the beam end node, when strong shock occurs, the pull rod can slightly swing along the axis of the beam end disc spring group under the action of the beam end disc spring group, energy consumption is realized under the action of the damper, the energy input into the beam end node is dissipated, the formation of plastic hinges of the beam end node structure is effectively avoided, and therefore the beam end node structure can be put into use without damage or slight damage under the action of large shock and the node after the shock can be restored. Meanwhile, the stiffening ribs and the ultra-small brackets respectively limit the radial displacement and the circumferential displacement of the beam ends, and the shock resistance of the structure is improved.
Therefore, the prefabricated assembly type swinging self-resetting concrete frame structure provided by the invention can swing when a strong earthquake occurs, the formation of plastic hinges of a column base node structure and a beam end node structure is avoided, the column base node structure and the beam end node structure are not damaged or slightly damaged, the nodes after the earthquake can be put into use without repairing, the structural stability is strong, the self-resetting capability is strong, and the prefabricated assembly type swinging self-resetting concrete frame structure can be widely applied to various building structures with the function of restoration.
In order to facilitate assembly and save construction time, the concrete foundation and the concrete column are of a prefabricated structure, the top surface of the concrete foundation is provided with the limiting groove in the prefabricating process, and the bottom end of the concrete column is provided with the steel shoe, so that assembly between the concrete foundation and the concrete column, construction of a column base node structure and construction of a beam end node structure are only needed in a construction site, and a large amount of construction time is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic front view of an embodiment of a prefabricated swinging self-restoring concrete framework structure provided by the present invention;
fig. 2 is a schematic top view of the prefabricated swinging self-restoring concrete framework structure of fig. 1.
In fig. 1-2:
the concrete foundation is 1, the concrete column is 2, the steel shoe is 21, the bottom plate is 22, the column base node structure is 3, the anchor rod is 31, the column base disc spring group is 32, the cantilever plate is 33, the support plate is 34, the concrete beam is 4, the end anchor plate is 41, the beam end node structure is 5, the pull rod is 51, the beam end disc spring group is 52, the stiffening rib is 53, the ultra-small bracket is 54, the damper is 55, and the end plate is 56.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a prefabricated assembly type swinging self-resetting concrete frame structure, which reduces the damage of the structure under strong earthquake, has small residual deformation of the structure after the earthquake and is beneficial to the use function of quickly restoring the structure.
Referring to fig. 1 to 2, fig. 1 is a schematic front view illustrating an embodiment of a prefabricated swinging self-restoring concrete frame structure according to the present invention; fig. 2 is a schematic top view of the prefabricated swinging self-restoring concrete framework structure of fig. 1.
It should be noted that, in this document, the bottom and the bottom refer to the ends relatively close to the concrete foundation 1, and the top refers to the ends relatively far from the concrete foundation 1; the leg disc spring set 32 and the beam-end disc spring set 52 referred to in this document require a pre-stress to be applied during installation so that they are stable when no vibration occurs.
The prefabricated assembly type swinging self-resetting concrete frame structure provided by the embodiment comprises a concrete foundation 1, a concrete column 2, a concrete beam 4, a column base node structure 3 and a beam end node structure 5, wherein the concrete column 2 is vertically arranged in a limiting groove on the top surface of the concrete foundation 1 through a steel shoe 21, and the concrete beam 4 is horizontally arranged on the side wall of the concrete column 2; the column base node structure 3 comprises a cantilever plate 33, an anchor rod 31 and a column base belleville spring group 32; the cantilever plates 33 are connected to two sides of the concrete column 2 close to the bottom and connected with the steel boots 21; a plurality of anchor rods 31 penetrate through the cantilever plate 33 and are fixedly connected with the concrete foundation 1, and the column foot belleville spring group 32 is sleeved on the anchor rods 31 on one side of the cantilever plate 33 far away from the concrete foundation 1.
Preferably, the bottom of the concrete column 2 may be provided with a bottom plate 22, the bottom plate 22 is connected with the steel shoe 21, and the steel bars in the concrete column 2 pass through the bottom plate 22 and are fixedly connected with the bottom plate 22. The fixed connection here may be that the reinforcing steel bar passes through the bottom plate 22 and is connected by a nut on the side of the bottom plate 22 close to the concrete foundation 1, or that the reinforcing steel bar passes through a mounting hole on the bottom plate 22 and is plug-welded.
Preferably, referring to fig. 1, the bottom plate 22 may be a flush bottom plate, and the bottom plate 22 is flush with the bottom surface of the steel shoe 21.
The steel shoe 21 is arranged in a limiting groove in the top surface of the concrete foundation 1, the size of the limiting groove is matched with that of the steel shoe 21, and the depth is determined according to the requirement in actual production.
Preferably, shock absorbing pads may be provided between the steel shoe 21 and the retaining grooves of the concrete foundation 1 to dissipate the energy input by an earthquake into the column foot node.
The anchor rod 31 is used for connecting the cantilever plate 33 and the concrete foundation 1, the bottom end of the anchor rod 31 is fixedly connected with the concrete foundation 1, and the top end of the anchor rod 31 penetrates through the cantilever plate 33 and the column base belleville spring group 32 and then is fixed by fasteners such as nuts.
Preferably, an embedded member may be disposed in the concrete foundation 1, and the anchor rods 31 are connected to the embedded member. For the concrete types of the embedded members and the connection manner between the embedded members and the anchor rods 31, please refer to the prior art, and further description is omitted here.
Preferably, the end of the anchor rod 31 far away from the concrete foundation 1 is provided with a circular gasket, and the column foot disc spring group 32 is arranged between the circular gasket and the cantilever plate 33.
The column base belleville spring group 32 is used for limiting column base rigidity, bending moment and a corner, the column base belleville spring group 32 is sleeved on the anchor rod 31 and is arranged above the cantilever plate 33, and compared with the arrangement on the concrete foundation 1, the rotating radius of the concrete column 2 is effectively reduced.
The greater the number of belleville springs in the column base belleville spring group 32, the greater the deformation that the column base node structure 3 can bear, and the stronger the autonomous recovery ability of the column base node structure 3.
The concrete beam 4 is horizontally arranged on the side wall of the concrete column 2, preferably, an end anchor plate 41 can be arranged at the beam end of the concrete beam 4, and the steel bars of the concrete beam 4 penetrate through the end anchor plate 41 and are fixedly connected with the end anchor plate 41; a gap is provided between the end anchor plate 41 and the beam-end belleville spring set 52 to provide a space for the drawbar 51 to swing during a strong shock.
The fixed connection here may be a connection of the reinforcing bars of the concrete beam 4 through the end anchor plate 41 by nuts on the side close to the concrete column 2, or a connection of the reinforcing bars of the concrete beam 4 through the mounting holes of the end anchor plate 41 by plug welding.
At the column base node, the steel shoe 21 can carry out annular restraint on the concrete column 2, so that the compressive strength of the concrete column 2 is improved, and the concrete column is prevented from being damaged under the condition of axial compression; meanwhile, the concrete column 2 is installed in a limiting groove of the concrete foundation 1 through the steel shoe 21, lateral displacement of the concrete column 2 is limited, the concrete column 2 and the concrete foundation 1 are only in contact without connection relation, and when a strong shock occurs, the concrete column 2 can slightly rock in the vertical direction due to the fact that the column base belleville spring group 32 is arranged at the top of the suspension plate 33, and the formation of a plastic hinge of the column base node structure 3 is effectively avoided.
Therefore, the swinging self-resetting concrete structure provided by the embodiment avoids the formation of the plastic hinge at the column base node structure 3, so that the column base node structure 3 can be put into use without damage or slight damage in the earthquake and without repairing the node after the earthquake, has strong structural stability and strong self-resetting capability, and can be widely applied to various building structures with recoverable functions.
Preferably, a supporting plate 34 may be disposed between the cantilever plate 33 and the concrete foundation 1, and both the cantilever plate 33 and the steel shoe 21 are connected to the supporting plate 34, thereby effectively preventing the cantilever plate 33 from being damaged.
The shape of buttress plate 34 may be triangular as shown in fig. 1, although other geometries are possible.
On the basis of the above embodiment, the beam-end node structure 5 is defined, and the beam-end node structure 5 may include a stiffener 53, an ultra-small corbel 54, a damper 55, a tie rod 51, and a beam-end disc spring group 52; a plurality of pull rods 51 penetrate through the side wall of the concrete column 2, and a beam-end disc spring group 52 is arranged at the end part of each pull rod 51; the stiffening ribs 53 are arranged on two sides of the web plate of the concrete beam 4, and one end of each stiffening rib 53 is connected with an end plate 56 which is used for being attached to the side surface of the concrete column 2 of the concrete beam 4; the side surface of the ultra-small bracket 54 is connected with the side wall of the concrete column 2, and the top surface of the ultra-small bracket is contacted with the lower flange of the concrete beam 4; the damper 55 is installed on the top and/or bottom surface of the concrete beam 4 and is connected with the concrete column 2.
The beam-end disc spring group 52 may be provided only at one end of the pull rod 51, or the beam-end disc spring groups 52 may be provided at both ends of the pull rod 51.
The pull rod 51 penetrates through the concrete column 2, and two ends of the pull rod are connected with the beam-end disc spring set 52 in a sleeved mode through fasteners such as nuts. Preferably, a reserved hole for the pull rod 51 to pass through is formed in the concrete column 2, and the pull rod 51 sequentially passes through the end plate 56 located on one side of the concrete column 2, the reserved hole and the end plate 56 located on the other side of the concrete column 2 to be connected with the concrete column 2.
Preferably, the end of the tie rod 51 remote from the end plate 56 is provided with a circular spacer, and the beam-end disc spring assembly 52 is provided between the circular spacer and the end plate 56.
The greater the number of belleville springs in beam-end belleville spring set 52, the greater the deformation that beam-end node structure 5 can withstand, and the greater the autonomous recovery capability of beam-end node structure 5.
The stiffening ribs 53 and the ultra-small brackets 54 are used for limiting radial and circumferential displacements of the beam ends respectively, the size of the stiffening ribs and the ultra-small brackets needs to be determined according to the size of the concrete column 2 and the size of the concrete beam 4 in actual production, and the selection of a specific structure and a specific installation position refers to the prior art and is not described herein again.
The damper 55 is used to dissipate energy input by a seismic into the beam end node, and preferably, the damper 55 may include a C-type damper and a power angle.
For the specific structure and installation of the damper 55, please refer to the prior art, and detailed description thereof is omitted.
At the beam end node, when a strong shock occurs, the pull rod 51 slightly swings along the axis of the beam end disc spring set 52 under the action of the beam end disc spring set 52, energy consumption is realized under the action of the damper 55, the energy input into the beam end node by the earthquake is dissipated, and the formation of a plastic hinge of the beam end node structure 5 is effectively avoided, so that the beam end node structure 5 can be put into use without damage or slight damage under the action of a large shock, and the node after the shock can be restored without repair. Meanwhile, the stiffening ribs 53 and the ultra-small brackets 54 respectively limit the radial displacement and the circumferential displacement of the beam ends, and the shock resistance of the structure is improved.
Therefore, the swing self-resetting concrete structure provided by the embodiment avoids the formation of plastic hinges at the beam end node structure 5, so that the beam end node structure 5 can be put into use without damage or slight damage in the earthquake and without repairing the nodes after the earthquake, has strong structural stability and strong self-resetting capability, and can be widely applied to various building structures with recoverable functions.
In order to facilitate assembly and save construction time, the concrete foundation and the concrete column are both of prefabricated structures, the top surface of the concrete foundation is provided with a limiting groove in the prefabrication process, and the bottom end of the concrete column is provided with a steel shoe, so that assembly between the concrete foundation and the concrete column, and construction of a column base node structure and a beam end node structure are only needed in a construction site.
In a specific embodiment, the prefabricated assembly type swinging self-resetting concrete frame structure comprises a concrete foundation 1, a concrete column 2, a concrete beam 4, a column base node structure 3 and a beam end node structure 5, wherein the concrete column 2 is vertically arranged in a limiting groove on the top surface of the concrete foundation 1 through a steel shoe 21, and the concrete beam 4 is horizontally arranged on the side wall of the concrete column 2; the column base node structure 3 comprises a cantilever plate 33, a support plate 34, an anchor rod 31 and a column base belleville spring group 32; the beam-end node structure 5 includes stiffeners 53, ultra small brackets 54, dampers 55, tie rods 51, and beam-end belleville packs 52.
Therefore, the prefabricated assembly type swinging self-resetting concrete frame structure provided by the embodiment can swing when a strong earthquake occurs, the formation of plastic hinges of the column base node structure 3 and the beam end node structure 5 is avoided, the column base node structure 3 and the beam end node structure 5 are free of damage or slight damage, the nodes after the earthquake can be put into use without being repaired, the structural stability is high, the self-resetting prefabricated assembly type swinging self-resetting concrete frame structure has strong self-resetting capability, and the self-resetting concrete frame structure can be widely applied to various building structures with restorable functions.
Preferably, the anchor rod 31 may be a high-strength anchor rod, and the pull rod 51 may be a high-strength pull rod.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The prefabricated assembled type swinging self-resetting concrete frame structure provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. The prefabricated swinging self-resetting concrete frame structure is characterized by comprising a concrete foundation (1), a concrete column (2), a concrete beam (4), a column base node structure (3) and a beam end node structure (5), wherein the concrete column (2) is vertically arranged in a limiting groove on the top surface of the concrete foundation (1) through a steel boot (21), and the concrete beam (4) is horizontally arranged on the side wall of the concrete column (2);
the column base node structure (3) comprises a cantilever plate (33), an anchor rod (31) and a column base belleville spring group (32);
the cantilever plates (33) are connected to two sides of the concrete column (2) close to the bottom and connected with the steel boots (21);
the anchor rods (31) penetrate through the cantilever plate (33) and are fixedly connected with the concrete foundation (1), and the column foot belleville spring group (32) is sleeved on the anchor rods (31) on one side, far away from the concrete foundation (1), of the cantilever plate (33);
the beam end node structure (5) comprises stiffening ribs (53), an ultra-small bracket (54), a damper (55), a pull rod (51) and a beam end belleville spring group (52);
the plurality of pull rods (51) penetrate through the side wall of the concrete column (2), and the beam-end disc spring group (52) is arranged at the end part of each pull rod (51);
the stiffening ribs (53) are arranged on two sides of a web plate of the concrete beam (4), and one ends of the stiffening ribs (53) are connected with end plates (56) of the concrete beam (4) and used for being attached to the side faces of the concrete column (2);
the side surface of the ultra-small bracket (54) is connected with the side wall of the concrete column (2), and the top surface of the ultra-small bracket is in contact with the lower flange of the concrete beam (4);
the damper (55) is mounted on the top and/or bottom surface of the concrete beam (4) and connected to the concrete column (2).
2. The precast assembled swinging self-restoring concrete frame structure according to claim 1, wherein a supporting plate (34) is provided between the cantilever plate (33) and the concrete foundation (1), and the cantilever plate (33) and the steel shoe (21) are connected with the supporting plate (34).
3. The precast assembled swinging self-restoring concrete frame structure according to claim 2, wherein a bottom plate (22) is provided at the bottom of the concrete column (2), the bottom plate (22) is connected with the steel shoe (21), and the steel bar in the concrete column (2) passes through the bottom plate (22) and is fixedly connected with the bottom plate (22).
4. The precast assembled type swinging self-resetting concrete frame structure according to claim 3, characterized in that an embedded member is arranged in the concrete foundation (1), and the anchor rods (31) are connected with the embedded member.
5. A prefabricated swinging self-resetting concrete frame structure according to claim 4, characterized in that one end of the anchor rod (31) far away from the concrete foundation (1) is provided with a circular gasket, and the column foot belleville spring group (32) is arranged between the circular gasket and the cantilever plate (33).
6. The precast assembled type swinging self-restoring concrete frame structure according to claim 5, wherein an end anchor plate (41) is provided at a beam end of the concrete beam (4), and the reinforcing bars of the concrete beam (4) pass through the end anchor plate (41) and are fixedly connected with the end anchor plate (41);
and a gap is arranged between the end anchor plate (41) and the beam end disc spring group (52).
7. The precast assembled type swinging self-resetting concrete frame structure according to claim 6, characterized in that a reserved hole for the pull rod (51) to pass through is formed in the concrete column (2), and the pull rod (51) passes through the end plate (56) on one side of the concrete column (2), the reserved hole and the end plate on the other side of the concrete column (2) in sequence to be connected with the concrete column (2).
8. A prefabricated assembled swinging self-restoring concrete frame structure according to claim 7, characterised in that the end of the tie rods (51) remote from the end plate (56) is provided with a circular shim, and the beam-end belleville spring packs (52) are provided between the circular shim and the end plate (56).
9. A prefabricated swinging self-restoring concrete frame structure according to any one of claims 1 to 8, characterized in that the damper (55) comprises a C-shaped damper and a dissipative angle steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011566691.3A CN112726816B (en) | 2020-12-25 | 2020-12-25 | Prefabricated assembled sways from restoring to throne concrete frame structure |
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